## davisgurl101 3 years ago Is the following relation a function?

1. davisgurl101

2. hsmt

are you still there?

3. davisgurl101

yes

4. hsmt

well, for each individual x there can be only one y

5. hsmt

that is, if you want the relation to be a function.

6. akash_809

for a relation to be a function, for one value of x ther should only be one value of x

7. hsmt

another way to do this is to graph it

8. akash_809

for x=-1, there are two values of y

9. hsmt

exactly right akash.

10. akash_809

making a graph would make this tedious

11. hsmt

not really. only what four or five points, and remember, some people are more visual

12. akash_809

@davisgurl101 did u get this

13. davisgurl101

i dont under stand

14. akash_809

but seeing the set would make it easy to solve, if u draw the graph then u have to dwar a line parallel to y -axis and see at how many points the line cuts the graph...

15. akash_809

a relation is afunction if and only if a value of x in the relation corrospons to unique value of y...can u understand this definition

16. akash_809

@davisgurl101 if u understand the above definition then you should have ur answer, if u don't ask ur doubt